Buzz·Posted on Jul 26, 2012Zach Galifianakis And Jimmy Fallon Do The Old SwitcherooLast Night Zach Galifianakis Interviewed Jimmy Fallon As Jimmy Fallon (Jimmy got to play Zach.) Spot on.by Samir MezrahiBuzzFeed StaffLinkFacebookPinterestTwitterMail View this video on YouTube youtube.com